3BLD Trainer — Speffz, pairs, memo & timer

Speffz reference

Edges and corners each reuse the letters A–X in their own namespace. Your buffers are highlighted. Quick check: the UB edge carries A (U sticker) and Q (B sticker).

3D cube

True to Speffz: every sticker shows its live scheme letter (custom scheme included). Drag to rotate, scroll or pinch to zoom, click a sticker. Needs internet once for the three.js CDN.

Show Mode

Letter drills

Pieces Direction Answer Skip buffers

Correct 0/0 Streak 0 Best 0

Press “Next” to start.

Piece drill

One piece only. The glowing side is the quiz — type its Speffz letter. Great for visualising where each letter lives.

Mode Skip buffers Show other stickers

Correct 0/0 Streak 0 Best 0

Press “New” to start.

Letter-pair words

Give every 2-letter combo a vivid word or image. Pairs you save here show up as hints in the Memo tab.

Memo recall

Length Mode Peek (s, 0 = manual)

Press “New sequence”.

Recall (letters only)

Timer

Hold Space (or press-and-hold the pad) until green, release to start, press again to stop. Click a time to cycle OK → +2 → DNF.

—

0.00

HOLD

Solves 0 Best — ao5 — ao12 —

Settings & data

Edge buffer Corner buffer Theme

Letter scheme

Rename any sticker to use your own scheme. Letters must be A–X. Saving an unchanged grid restores stock Speffz.

Edges

Corners

About

Lettering defaults to the community-standard Speffz scheme (A–X for edges, A–X for corners); Settings → Letter scheme holds your own overrides. Everything is stored locally in your browser — no account, no server. See README for the full scheme tables, deploy notes, and roadmap.